Incubator



Patented Nov. 8, 1927.

UNITED STATES Y1,648,735 PATE-NT OFFICE.

FRED W. LORD, OF TIPTON, INDIANA, ASSIGNOR 'IO IHEv OAKES MANUFACTURING i COMPANY, OF TIPTON, INDIANA, A CORPORATION vOF INDIANA.

' INcuBA'ron.

'Application filed Api-i1 as, 1926. semi No. 105,222.'

My said invention relates to incubatore and consistsl in various improvements 1n the details of constructionand arrangement of parts, whereby greater ethciency ispbtained 5 particularly in securing and maintaining the desired temperature in the egg chamber, all as will hereinafter be more fully described and claimed.

Referring to the accompanying drawings m which are made a part hereof and on which Similar reference charactersv indicate similar parts, h

Figure 1 is a cent-ral vertical section of an incubator illustrating the application of my 1 5 invention, and 'r Figure 2, a fragmentary section on line 22 of Figure 1. l

In the drawings reference character V indicates the body of an incubator, 11'its top and 12 its supporting legs. A tube 13 is `mounted centrally in the bottom of the egg chamberI providing a central opening and a lamp 141 is supported beneath with its chimney projecting' into said tube but spaced annularly therefrom. An egg tray 25 formed with its upper edge rolled over to engage the upper edge of the incubator body 1s mounted within said body and spaced therefrom'with layers of insulating material bek'f) tweeinas shown. Its bottoni tapers downwardly' and is formed with a central opening uboutwhich an upstanding annular flange or sleeve 15 is mounted spaced from the sleeve 13. f vSaid egg tray is lined with apziff. propriate material. A central pipe or tube 1G supported by the top 11 concentric with the tube 13y with its lower end over the lamp and extending for a distance downwardly'to within said tube 13. The tube 16 is pro- *N vided with a top consisting of a disk 0r4 damper 17 supported by an arm 18 pivoted on a bracket on said top. A counter-balance weight 31 which nearly balances the dish 17 is mounted on the outer end of saidv t pivoted arm and a thermostatl) is connected with said arm for controlling the damper and regulating the temperature in a well known manner.

The top or lid is formed to tit the upper 5' edge of the incubator body, its lower edge being formed with a rolled stiffeningrib which tits over a similarly formed upper edge of the body. Said lid is composed of the outer wall 11 andan inner wall or partition 27 spaced from each other to provide a. hollow top and an annular air chamber, as

shown. A sheet of insulating material 32 is mounted over the top of the inner partition 27. Radial pipes 2O connect with the cene tral tube 16 at one end and with the annular chamber in the rim of the lidat the other end. These pipes may be of anyv number desired, but I have shown siX as va desirable number. These pipes are within the upper portion of the egg chamber, spaced below the partition 27, so that in use they will radiate heat downwardly into said egg chamber. The edgey 22 ofthe lid or top is providedwith'a series of perforations 23 at yspaced intervals about the saine for the escape of hot air, as will be presentl described. The bottom of the incubator ody isprovidedwith perforations 29 for the ingress of fresh air and a series of outlet openings 30 are kprovided around its upper edge to discharge immediately beneath the lower edge of the' lid or top, as shown.

The walls of the body and the bottoni of the egg chamber, as .well as the top surface ofk partition 27, are lined with insulating material, as shown.

In operation the eggs areplaced upon the surface of the egg tray 25 in the` usual manner and heat from they lamp 14 heatsthe'air passing up through the central openings and ltubes into tube 16 and out through'the radial pipes 2O into the'hollcw lid, said tubes radiating the heat downwardly into the egg chamber and raising the temperature of the air within said chamber to the predeter mined degree, regulated by the position lof weight 31 and the operation of thermostat 19, as willbe readily understood, y 'Fresh 'air comes into the vbody of the incubator through the aperturesvl), passes up between vtubes 13 and 15 and is heated by the heat generated by the lamp at this point and passes out through' the small apertures 30 at the upper edge of the chamber, thus providing the necessary ventilation, as w-ell as obtaining the predetermined temperature re` quired to secure the most elicient results. IVhen the temperature in the egg chamber exceeds said predetermined degree the thermcstat 19 will operate to open the `damper 17 when the heat from the lamp will pass directly through tube 16 te the outer air until the tei'nperature .falls to below the predetermined degree, when the damper will automatically close and hot' air provided by the means before described will again circulate through the radial pipes 20 and out through the annular chamber in the lid discharging'througli the apertures 23, the heat units being radiated downwardly rom said pipes toward the eggs supported upon the egg tray, all as Will be readily understood. By this means the desired temperature can be maintained and a very accurate and sensitive regulation secured.

I't vvillbe seen lthatthe hot air chambers are lst lbstantially in the form of the hub, spokes and rimot a Wheel With outlet openings in therim between the spokes.

While I have shovvnlmy inventionas appliedtoa metal inciibator` of circular form,

nevertheless,obviouslyother ytypes ofincu- Y batons may be provided with my invention, ,and ,I do not vWish to limit myself Ito the k,structureshown inthe drawings, but o nly as'indiczited in theappended claims.

Having thus fnllycdescribedmy said in- Yvention;what' Iclainras new an-d desire to secure by `Letters P atent, y is ,An incubator comprising` abody containing anegg tray and having a central aperture, a lidforineld hollow and provided irvith a central tube, a therniostatically controlled ,damper on said tube, a heating elenient mounted beneath the central opening in the incubator, and radialpipes leading 'fromtlyie central tube in vthelid to an annularspace Varound its edge, said pipes being loeatedbeneathjthe inner lWall 'of said `lid and adapted to radiateheat directly into the egg chamber, substantially asset forth.

2. lAn incubator comprising a body having insulated Walls, a perforated bottom and a central opening .with an upstanding tube surroundingsaid opening, andoutlet open- ,ings formedV around its upper edge; an egg tray kmounted Within said body and having a centralA opening surrounded by an upstand'- tube Which is ,o 'l' larger diameterithan they central tube of said body providing an lannular space betweensaid tubes; a heating element supported beneath the central open* ing in said body; la lid adapted to t on the upper edge o1 said body and formed with spaced `Walls to provide an air chamber both in the top and around thezedgesthereof Wit-h outlet openings through the outer Wall; `a series of radial pipes connected at one end With the centraltube carried'by said lid and at the other end IWith thefannular air cham- .ber in said lid; and a therinostatically con- Vas set forth. l

4. An incubator comprising abodylcontaining lan Vegg trayA and having an. aperture, a lid i101 Seiflbody fetale@ hellw. mid provided with a tube COIrQSPQHdn-s in errang@- lnent to said aperture, a heating( element mounted beneath said l;z'rpertnre, and l pipes leading from l the tube in the ,lid tothe .annular space around its edge, said pipes vv being located beneathvthe inner' vvallofsaid lid and adapt-ed toradiate heat directlyinto the eggA chamber, substantially as lset -liortl'i `5. Anincubator'comprising vhaving ran opening with an 2{uipstfaiiding 4tube surrounding said.v opening, Ian; egg` Itray HWithin said bqdy lia vingfancpeningcorresponding in arrai'igemeiittothe openingninsaid body and surrounded by anupstanding tube larger diameter, than thetube lofsaid body and providing an*fannularA space betvveen said; tubes,` a .heating element 'supperted' beneath the v4openiing y(insaid body',;a lid, adapted to riit over .the upper edge, of body,` said litd. being iormed jivith lspaced liv-.ills to ipro,- vide an air chamber bothin the top Vand around the edgethereei'7 and `a seriesiof pipes ,connectedl atcne end jiviih i the tube carried byfsaid lid Vand atthe ether fendi-With the .uit 'Chamber 'in 1. seid lief; Sebneitellirs set forth.v 'A Witnesswhereof, I havehereunto Vset my hand,atr Tipton, jlffndiana'ithis twenty-- siXthldayfo'f nineteenhundred Y anni) W.LORD. j 

